"""Contract smoke test: make the example, reconstruct 3D, save the summary."""
from __future__ import annotations

import json
import sys

from PIL import Image

from core.io import APP_TMP_DIR
from core.processing import simulate_full


def main() -> int:
    tif = APP_TMP_DIR / "example.tif"
    if not tif.exists():
        import scripts.make_example as me
        me.main()

    r = simulate_full(str(tif), engine="fast", fps=20.0)
    rep = r["report"]
    assert r["summary"].ndim == 3 and r["summary"].shape[2] == 3
    assert rep["keypoints_3d_tracked_fraction"] > 0.8, "3D reconstruction failed"
    assert rep["mean_reprojection_error_px"] < 3.0, "triangulation inaccurate"
    Image.fromarray(r["summary"]).save(APP_TMP_DIR / "smoke_summary.png")
    print("REPORT:", json.dumps({k: v for k, v in rep.items() if k != "legs"}))
    return 0


if __name__ == "__main__":
    sys.exit(main())